What Is a Dietitian and When Should I See One?

Updated

A dietitian is a qualified, regulated health professional who assesses, diagnoses and treats dietary and nutritional problems — for individuals and at a wider public-health level. According to the Irish Nutrition and Dietetic Institute (INDI), the professional body for registered dietitians in the Republic of Ireland, dietitians work with both healthy and ill people, using up-to-date scientific research on food, health and disease to give practical guidance on food and lifestyle choices. You should consider seeing one when you need personalised, evidence-based advice on eating — whether to manage a medical condition, support healthy growth, or improve how you eat and feel.

What a dietitian actually does

The INDI describes the role in three parts:

  • Assess — look at your dietary and nutritional situation.
  • Diagnose — identify dietary and nutritional problems.
  • Treat — address those problems with practical guidance.

That guidance is grounded in current scientific research on food, health and disease, and covers appropriate food and lifestyle choices rather than one-off tips.

Who dietitians work with

Dietitians work across the full range of people:

Group Example focus
Healthy people Eating well at different life stages, weight and healthy eating
People with medical conditions Dietary management alongside medical care
Public-health level Nutrition issues affecting wider populations

INDI's own Food Fact Sheets — written by dietitians — are organised around exactly these audiences: children's health, teenager's health, healthy aging, women's health, men's health, healthy eating and weight, sports and exercise, medical conditions, and malnutrition.

When it makes sense to see a dietitian

Consider a dietitian when the question you have is about food and nutrition specifically, and you want advice tailored to your situation rather than general information. Typical situations include:

  • You have a diagnosed medical condition where diet is part of management.
  • You are concerned about growth, eating or nutrition at a particular life stage (childhood, teenage years, older age).
  • You want to address healthy eating, weight, or sports and exercise nutrition.
  • You are worried about malnutrition or unintentional changes in eating.

For general healthy-eating information, INDI's Food Fact Sheets and recipe collection (nutritionally analysed by dietitians) may be enough on their own.

How to find a registered dietitian

INDI provides a Find a dietitian service: if you need to see a dietitian, you can look up contact details for registered dietitians running clinics in your area. That is the direct route from the INDI website to an appointment.

If you are a dietitian yourself

INDI is a membership body, and its stated member benefits include:

  • Professional indemnity and fitness-to-practice insurance cover of up to €2.5m
  • Free or reduced-price access to CPD opportunities, events and activities
  • Access to special interest groups for expert support and guidance
  • A quarterly INDI journal with news and articles
  • Reimbursement of outpatient fees for private patients

The site also points to careers information for anyone interested in a career in dietetics.

The short answer

A dietitian is a regulated professional who assesses, diagnoses and treats nutrition problems using current research, and works with both healthy and ill people. See one when you need personalised dietary advice — for a medical condition, a life stage, weight, sport, or concerns about malnutrition — and use INDI's Find a dietitian directory to locate a registered dietitian near you.